Door-lock.



` No. 840,666. PATENVTBD JAN. s, "1907.,

J. SLIGA.

DOOR LOGK.

APPLICATION :FILED MAY 17, 1906.

INvEN'IoR. am M BY W ATTI' designed a combination-lock which will give UMTED srArnnrnNT OFFICE. I JOHN SLIGA, CLEIFEIJAND, OHIO.

Doon-Look.

Patented Jan. 8, 1907.

To all whom -L't may concern:

Be it known that I, JOHN SLIGA, a citizen of the United States, residing at Cleveland, in'thecounty of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Door-Locks; and I do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and usethe same.

)ly invention relates to improvements in door-locks; and the improvement consists in the construction and arrangement of parts substantially as shown ,and described, and particularly pointed out in the claims.

My object is embodied in a door-lock,

adapted for either silding or swinging doors, but especially the former; and the lock comprises a combination of self-contained lock..

ing and unlocking elements permanently mounted on the door. l y

In the accompanying drawings, Figure 1 is a central sectional elevation of my improved lock, showing the bolts engaged with the locking-plate on the other door, assuming that two doors are to be locked together. Fig. 2 is a cross-section on line 2 2, Fig. 1. Fig. 3 is a face view of the door and the controlling members of the lock. Figs. 4 and 5' are separate views in diagrammatic form of the two pairs of locking-dogs and their respective controlling keys or tumblers.

My improved lock is especially adapted for use wi th railroad-car doors and is intended to avoid the use of se arate'keys for eachl car and its door-lock. o this end I have me a great many different lock' combinations for different doors.

The lock comprises casing 2, which is set in a mortised recess of the door, as usual, and

'three separate bolt members mounted within said casing and hereinafter designated as sliding latch 3, pivoted catch 4,y and sliding bolt 5. Catch 4 is pivotally mounted upon casing 2 by cross-pm 6 and has a hook 7 at its outer end ada ted to engage locking-plate 8 on either t e jamb of the door or another door 9, and .said catch has a slotted extension 10near .its pivot-pin 6 wherewith operating engagement is made with a rocking member' 12, also pivotally mounted within casing 2. Member 12 has a pair of oppositely-projecting arms 14 and 15, and a-pm 16 on arm 14 constantly engages slotted extremity and definesA the movement of catch 4. Rotation is imparted'to member 12 by means of handles or knobs 17,

mounted upon square cross-shaft 18. Latch 3 is operatively engaged by pin 19 on arm 15 ofmember 12, and said pin rides in slot 20 to move the said latch back and forth when member. 12 is rotated. Thus rotation of member 12 by handle 17 in one direction will throw latch 3 and catch 4 out of locking engagement with plate 8 and if rotated in the other direction positive locking action of the parts is the result. A wire spring 21, coiled upon post 22 of the casing '2, engages member 12 andlatch 3 and serves to throw said latch out.- Bolt 5 has two ratchet-teeth 23 on its bottom edge, which are desi ned to engage teeth 24 on member 12, an a coilspring 25 bears against the inner `-end of bolt 5 and against the casing to press said vlbolt outward. Assuming lthat-the lock is '.used with a pair lof sliding doors, it will be seen that .when the 'doors are brought edge to edge plate 8 will strike bolt 5 and force the same linward and thereby throw latch 3 and catch 4 into locking relatlon-with plate 8, because of the engagement between teeth 23 and 24 on bolt 5 and member 12,' respectively. There a spring 35` attached thereto at. one end,

which bears against casing 2. Each dog is also provided with a tooth 36 and a cut-out 95 oraslotted portion, whereby locking or free travelin engagement is provided for between al the dogs and a pro'ection 36 rigidly mounted on the side of atch 3. Each dog must be brought to a predetermined position before projection36 can free itself so. as to permit latch 3 to move inward, and as IOO this latch is positively connected to member 12 and catch 4 is also positively connected -with member 12 it will be seen that both latch 3 and catch 4 are locked and unlocked together. y

The means for unlocking all the dogs consists of a pair of keys or tumblers 36 and 37, respectively, each of which is mounted upon IIO its own cross-shaft 38 and separately controlled by thumb-nuts 40 on each side of the door. Each thumb-nuthas a disk 41 provided with suitable-characters adapted to register with a mark 42 on the face-plate 434 of the door and whereby the position'of the tumblers in respect to the dogs is determined. It is necessary to set both tumblers in order that complete unlocking of the parts may be obtained, and tumbler 36 has a stepped pro- .jection 44, which is adapted to engage the free ends of dogs 30vand 31 to raise the same and remove teeth 36 from the ath of projection 36 on latch 3, and tumb er 37 is provided With cam-surfaces 46, which are adapted to engage dogs 32 and 83, and when said tumbler 37 is brought to the proper position dog 33 is unlocked, and if all the other dogs are also so properly positioned latch 8 is free to be drawn 1n.

What I claim is- 41. In door-locks, a sliding latch, a pivoted catch having a slotted extension and a rotary member having arms and pins lthereon slidably engaged Within said extension and with said latch, means to rotate said member and a set of locking-dogs therefor, and unlocking members for said dogs.

2. In door-locks, a slidin-g latch and a pivoted catch and a rotary member operatively `connected with the said parts, in combinau tion With a set of locking-dogs-,for said part-s and a set of unlocking rotary engaging members for said dogs.

3. In door-locks, a sliding oted catch having a slotted extension and a toothed rotary member having arms and pins,

thereon adapted to provide operating enga ement between said parts, and a slidingboit having teeth adapted to engage with said toothed rotary member, in combination latch and a piv-l and Ameans to actuate the same, in combination vwith a series of locking-dogs adapted to lengage with one of said members, a pair of unlocking members for said dogs, and means on the outside of said lock adapted to determine and set said unlocking members for unlocking.

v 5. A door-lock comprising a sliding latch and a pivoted catch and a rotary member having operating engagement with said parts, and a sliding bolt having operating engagement with said rotary member, in combination with a set of pivoted dogs adapted to have lock-ing engagement with said sliding latch, and a set of combination unlocking members for said dogs.

6. In door-locks, a casing and three separate bolt members mounted therein comprising a sliding latch and a pivoted catch and a sliding bolt, and a rocking member operatively engaged with each of said bolt members, in com ination with a set of dogs pivotally mounted Within said casing and a projection on said sliding latch operatively engaged with said dogs, and a set of rotatable members for operatively engaging separate dogs, means to set said dog-operating members in predetermined positions, and means to operate said rocking member for throwing the bolts.

In testimony whereof I sign this specification in the presence of two Witnesses.

JOHN SLIGA.

Witnesses:

`R. B. MOSER, C. A. SELL. 

